Neck fan



FIG. 1 is a front elevation view of a neck fan showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an enlarged view of a neck fan taken from the circle part in FIG. 6 .

The broken lines surrounding portions of the neck fan in FIG. 6 and FIG. 7 form no part of the claimed design. 

CLAIM The ornamental design for a neck fan, as shown and described. 